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Bacteria. Our little friends…. Prokaryotes. Cells without a nucleus Bacteria ________. Prokaryotes. 2 kingdoms- Eubacteria ___________. Eubacteria. Protective cell wall Can have 1-2 layer membrane in cell Wall. Found everywhere ____________. Cyanobacteria.

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Bacteria

Bacteria

Our little friends…


Prokaryotes
Prokaryotes

  • Cells without a nucleus

  • Bacteria

  • ________


Prokaryotes1
Prokaryotes

  • 2 kingdoms-

    • Eubacteria

    • ___________


Eubacteria
Eubacteria

  • Protective cell wall

  • Can have 1-2 layer membrane in cell Wall.

  • Found everywhere

  • ____________


Cyanobacteria
Cyanobacteria

  • Most important Eubacteria

  • Blue-green pigment, no chloroplasts

  • Found in _________


Archaebacteria
Archaebacteria

  • Lack Eubacteria carbohydrate in cell wall (____________)

  • Oxygen free living aka.. ____________

  • Live in extremes salt, acid & temp.


Identification
Identification

  • _______

  • Cell wall

  • ________


Shape
Shape

  • Rod- ________ (plural)

    -bacillus

    (singular)


Shape1
Shape

  • Round- ________

  • Staphylococcus epidermidis

  • Chains/clumps/pairs


Shape2
Shape

  • Spiral- ________

  • Leptospira

  • syphilis


Cell wall
Cell Wall

  • Gram stain- Hans Gramm

    • Blue- gram (+) 1layer

    • Red- gram (-) 2 layers

      1layer- Carbohydrates 2 layer- lipid Membrane


Movement
Movement

  • Flagella- 1 or more

  • ______-hairs

  • Gliding- slimelayer

  • Some don’t move


Getting energy
Getting Energy

  • Autotrophs

    • __________

    • Chemotroph


Getting energy1
Getting Energy

  • Heterotrophs

    • Chemotrophic…

    • ___________…

      -use both light and organics


Respiration
Respiration

  • Obligate ________

    • Must have O2

  • Obligate _________

    • Poisoned by O2


Clostridium botulinum
Clostridium botulinum

  • Ex. Of Anaerobe

  • Grows and produce toxins

  • Botulism causes paralysis



Reproduction
Reproduction

  • Binary Fission

    Genetic Recombination

  • Trasformation, Transduction

  • __________- Pili

  • Spore formation endospore


Growth
Growth

  • Some can reproduce in 20 minutes

  • How many in 24 hours?


Importance of bacteria
Importance of Bacteria

  • Used to make foods

    • Cheese

    • Yogurt

    • Pickles


Other uses of bacteria
Other uses of bacteria

  • Oil spill cleanup

  • Water __________

  • Making drugs ex.

    • E.Coli & insulin


Bacteria and you
Bacteria and YOU!

  • ____________

    • Intestines E. Coli

    • Skin

    • Mouth


Bacteria all around
Bacteria All Around

  • Nutrient flow

    • Bacteria recycle and decompose dead material!!! What would happen if no bacteria


___________

  • Name for bacteria which decompose complex organic molecules into soil and nutrients


Sewage decomposition
Sewage Decomposition

  • Ex. Fish Tanks

    • Ammonia-> Nitrites

    • Nitrites-> Nitrates

    • Clean fish water


Nitrogen
Nitrogen ________

  • All Living things need Nitrogen

  • N2 in the atmosphere is not usable


  • Cyanobacteria can make nitrogen usable

  • “Nitrogen Fixation”

  • ________ in beans nodulescrop rotation



________

  • Disease producing agents..

  • Can include more than just viruses and bacteria


Virus caused disease

HIV

Mumps

Yellow fever

Common cold

Virus caused disease







Cancer
Cancer

  • Oncogenic viruses

  • Rous sarcoma virus in chickens









Antibiotics
Antibiotics

  • Can attack bacterial cells


Sterilization
Sterilization

  • Fire

  • Disinfectant- lysol

  • Radiation


Food processing
Food Processing

  • Refrigeration

  • Cooking

  • Preservatives- salt vinegar…


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